Blindstitch sewing-machine.



W. E. BAILEY. BLINDSTITCH SEWING MACHINE. APPLIoATIoN FILED 1:20.22, 190e.

`z sums-SHEET 1.

W. E. BAILEY.

BLINDSTITGH SEWING MACHINE. APPLIoATxoN FILED 19110.22. 1908.

1,091,619. Patented Mar.31, 1914.

2 SHEETS-SHEET 2.

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STATES PATENT OFFICE.

WILLIAM E. BAILEY, OF BEVERLY, MASSACHUSETTS, .ASSIGNOR TO ARiBETTER FELLING'MACHINE COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MAINE.

BLINDSTITCI-I SEWING-MACHINE.

Application led December 22, 1908.

To all who/n 'it 21mg/ concern.'

Be it known that I, VILLIAM E. BAILEY, a citizen of the United States, and a resident of Beverly, in the county of Essex and State of Massachusetts, have invented an Improvement in Blindstitch Sewing-Machines, of which the following description, in connection with the accompanying drawing, is a specification, like letters on the drawing representing like parts.

This invention relates to a blindstitch sewing machine for operating upon the work which by reason of its shape cannot be spread out flat upon the ordinary worksupport, such for example as the sleeve and leg portions of garments.

The stitch-forming instrumentalities and various other features of the machine are preferably of the type of construction similar to that of the well-known Arbetter machine. I

While various blindstitching operations may be performed with the machine embodying this invention it is particularly intended for felling work 4upon sleeves and trousers legs. It is desirable for simplicity and economy of construction, as well as for ease of handling and operation, that the stitching and feeding mechanisms should always operate in the same direction. The classes of work, however, to be operated upon require the positioning of the seam in reverse directions with respect. to the edge of the article. For example, in felling the bottoms of the legs of trousers the fabric is usually unlined, and this fabric is turned in and felled directly to itself; while in felling the ends of sleeves the fabric is usually lined and the inturned edge of the lining felled to the inturned fabric. Regarding the' edge or end of the trousers or of the sleeve respectively it will be recognized that the felling stitch mustibe made in the opposite direction in the one case to that in the other. y

The 'present invention provides a cylindrical work-support adapted to enter the article to be stitched, such as the sleeve or trousers leg, and allow the article to be fed without obstruction around this support.

'This Vsupport is carriedv by a standard yieldingly 'mounted so that'the work Will be held yieldinglyf agz'rinst the stationary presserfoot, and the cjlindrical? woksupport projects horiaontal y to' the right or the left of Specification of Letters Patent.

Patented Mar. 31, 1914. serial No. 468,849.

the standard according to the nature of the work to be performed, as in the case of felling the bottoms of trousers legs or the sleeve ends.

The invention also involves a yielding work-plate section in the cylindrical support beneath the presser-foot, the tension of which may be varied as desired.

The invention also involves the use of a feeding mechanism mounted and operating entirely above thc cylindrical work-support.

The invention also involves a bender so constructed and located as not to interfere with the passage of the work around the eylindrical work-support. i

The invention will more fully appear from the accompanying description and drawings and will be particularly pointed out in the claims.

The drawings illustrate a preferred form of construction embodying the invention, in which the stitch-forming mechanism and various other features, many of which it is unnecessary to illustrate, are the same as those characterizing the Arbetter type of machine above referred to. i

In the construction illustrated the machine is designed for use upon work of the character of the bottoms of trousers legs, where the work must be presented from the right-hand side of the machine, or in other words, slid over a cylindrical support pointing to the right in order to have the operation of the stitch-forming and feeding mechanisms occur in the same direction as is customary in ordinary work.

In the drawings, Figure l is a front end elevation of the machine. Fig. 2 isa side elevation of the forward portion of the machine, partially in cross-section and with some of the parts removed. Fig. 3 is a rear elevation of the feeding mechanism and its support-ing and operating parts. Fig. 4 is a top plan View of the presser-foot.

In its general arrangement the machine herein illustrated comprises a work supporting base or bed and an overhangin head A2, only the forward portions of whlch are illustrated. The overhanging head A2 supports and carries the entne stitch-forming mechanism and the stationary presser-foot, as in the case of the Arbetter type of ma-, chine. In the machine illustrated the overhanging head-earries`also the-entire feeding mechanism so that the stitch forming mechanism, the feeding mechanism, and theA and at another time diagonal to,- the feed.

This movement of the needle in felling work enables one stitch to be taken into the main or base fabric close up to and parallel Iwith the edge to be felled thereto, and another stitch to be taken diagonal into the overlying layer at the edge.

- The main driving shaft ofthe machine is indicated at B and carries at its forward end the disk B2 from which7 by means of a connecting rod B2 to the'crank-arm B4 of the needle-carrying rock-shaft B2the proper oscillatory movementsjare imparted to the needle. The mechanism forI rockin the needle bodily to cause it to move irst 1n the' straight and then in the diagonal path with` respectto the edge are not illustrated and need not here be described.

The -complemental stitch-forming mechanismis indicated as a revolvin hook C, inclosing a bobbin case and bo bin C2, and carried by a support C2 depending from the overhanging head A2. The rotary hook is supported -and driven by suitable connections, not necessary .to illustrate or describe, from the main driving shaft and moves in a plane transverse and oblique to the paths of the needle. i

j The resser-foot D is similar to that shown 1n the above-mentioned patents and is rigidly supported from the overhanging head A2. opening D2 constituting the needle throat, and as' having its heel portion concaved on the upper surface at D3 to provide for the movementy of the needle in making the straight and diagonal stitches. It is also shown as provided with parallel openings D4, D5, one at each side of the needle throat and the point at whichthestitch is taken, these openings allowin for the movement ofthe feed dog to be 1 escrib'edflt isalso provided witha suitable guard D, with an edge-gagev D7, and a finger Ds for raising the edge of the overlying layer.

The feeding mechanism, which as stated is mounted in the overhanging head A2,

L comprises a suitably constructed yfeed 'dog E,

and means for givingitan up and down and forward and backward movement. In the It is shown'as provided with anA menare other arm, E", which is rotarily adjustable with respect to the arm E7 by means of the set-screw E10, projects upwardly and is held against the face 'of a second cam E12 on the main shaft B by means of a spring E12. The extent of the swinging movement of the bellcrank lever and consequently the extent of the backward and forward movement of the .feed dog-is determined by means of a setscrew E12 mounted on the'sliding member E2.

The feed dog mayl be constructed according to requirements of the particular work,

but is hereinl shown as provided with two serrated, `longitudinally extending proj ections E15v and E16, working through the slots D5 and D4 respectively in the presser-foot soasto grip and feed the fabric at both Csides of the point at which the stitch is taken into the fabric,"thu's securing the positive control of the fabric atall times. A vertical standard F is mounted to. slide in ways in the base or bed A of the machine, and is held in place'by means of the1 plate F2. This standard F is held yieldingly upward by a spring F2 and is depressed when desired by means of the lever F1 connected to the stud F5.- The standard F is bent to one side or as illustrated to the l'eft at its upper end, and carries projecting therefrom beneath the stitch-forming mechanism and, presser-foot, or as in the case illustrated projecting to the right, a horizontal,- cylindrical'. work-support G. The work-support is of such a size as to allow the tubular work to be operated upon, such for example as a sleeve or trousers leg to be .slipped thereover and fed therearound by the feeding mechanism.

The .cylindrical work-support comprises a hollow shell closed at the end by a plate G2. The cylindrical work-support is also preferably provided with a yielding work plate section directly beneath the presser-foot, and

`which acts to holdnthe work in yielding engagement withy the presser-foot and feed dog. This yielding work-plate section takes care of the usual inequalities of the work,

while the entirework-support and standard yield under extraordinary circumstances arid are depressed when the work is to be inserted and removed. The work-plate section H H2 from the bottom of the cylindricalsupport. A set-screw H'1 projecting into a slot in the post H2 limits the upward movement' of the work-plate section. The work-plate section is held yieldingly upward by an arm Hs journaled on a stud HG, a coiled spring H7 connected at one end to the stud and at the other to the arm acting normally to elevate the arm. The stud HG may be rotated and locked in place by the nut HS, thus varying the tension of the spring H7 and consequently the pressure of the work-plate sectie-n H upwardly against the presser-foot and feed-dog. lt will thus be seen that the work-supporting base or bed A supports the main body of t-he work, while the cylindrical work support, or auxiliary vwork support as it may be termed, supports that portion of the work in the vicinity of the line of seam so that it may be readily handled and presented to the stitching mechanism, while the yielding work plate section supports that portion of the`work directly at the stiching point.

The bender` point K operates through the work-plate section H and the throat of the presser-foot to project the work into the path of the needle at the required times as usual. In order to secure the operation of the bender without interfering with the passage of the work around the cylindrical work-support the bender point K is carriedby a shank K2 offset at its ends and guided in its central portion in the upper end of the standard F. A plate K3 is removably secured to the standard at the upper portion to enable the removal and replacement of the bender shank K2. The shank K2 is held yieldingly downward by means of the spring K4 attached to the bender bar K5. The bender bar K5 slides vertically in bearings K6 in the plate F2, and is given its vertical movement by means of the crank arm KT operated in the usual manner from a cam K8. The bender bar K5 when elevated comes in contact with the bender shank K2 and elevates the bender to project the fabric into the path of the needle. On the depression of the bender bar the bender moves to inactive position under the influence of the spring K4.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A blindstitch sewing machine comprising a work-supporting base, an overhanging head, a presser-foot mounted in said head, an auxiliary horizontal, cylindrical work-support yieldingly and vertically movable with respect to'said base, and a yielding work-plate section mounted in said cylindrical work-support beneath said presser-foot, feeding mechanism supported from the overhanging head above and cooperating with said yielding section.

2. A blindstitch sewing machine comprising a work-supporting base, an overhanging head, a presser-foot mounted in said head,

a standard vertically movable with respect to said base, an auxiliary horizontal, cylindrical work-support projecting from said standard beneath said presser-foot, and a yielding work-plate section mounted in said cylindrical work-support beneath said presser-foot, feeding mechanism supported from the over-hanging head above and cooperating with said yielding` section.

B. A blindstitch sewing machine comprising a work-supporting base, an overhanging head, a presser-foot mounted in said head, an auxiliary, horizontal, cylindrical worksupport yieldingly and vertically movable with respect to said base, a yielding workplate section mounted in said cylindrical work-support beneath said presser-foot, feeding mechanism supported from the overhanging head above and coperating with said yielding section, and means for varying vthe yielding action of said work-plate section against the presser-foot and feeding mechanism.

4. A blindstitch sewing machine comprising a work-supporting base, an overhanging head, a presser-foot mounted in said head, an auxiliary horizontal, cylindrical work-support yieldingly and vertically movable with respect to said base, a work-plate section mounted in said cylindrical worksupport beneath said presser-foot, feeding mechanism supported from the overhanging head above and cooperating with said workplate section, a stud mounted in said cylin- -v drical Work-support, an arm engaging said work-plate section, a Vspring coiled about said stud and engaging said arm and acting therethrough to hold the work-plate section 'normally and yieldingly elevated.

5. A blindstitch sewing machine comprising a Work supporting base upon which the body of the work may rest and be supported, an overhanging head, a presser foot mounte'd in said head, an auxiliary cylindrical work-support vertically movable with respect to said base and projecting horizontally between said base and presser foot to allow tubular work to be slipped thereover and fed therearound, and a yielding work plate section mounted in said auxiliary work-support beneath said presser-foot to support the work yieldingly immediately at the stitching point.

6. A blindstitch sewing machine comprising a work supporting base upon which the body of the work may rest and be supported, an overhanging head, a mounted in said head, a standard vertically movable with respect to said base, an auxiliary cylindrical work support projecting horizontally from said standard between said base and presser foot to allow tubular work to be slipped thereover and therearound, and a yielding work plate section mounted in said auxiliary Work-support bepresser foot neath said presser foot to support the Work yieldingly immediately at the stitching point.

T A blind stitch sewing machine comprising feed mechanism, a head, a presser foot mounted in said head, a horizontalcylindrical Work support beneath said head, and a yielding Work plate section mounted in said cylindrical Work support beneath and coperating With said presser foot.

8. A blindst-itch sewing machine comprising a head, a presser foot mounted in said head, a horizontal cylindrical Work support vbeneath said head, a yielding Work plate section mounted in said cylindrical lWork support beneath and coperating With said presser foot, and feeding mechanism supported from the said head above and con operating with said yielding section.

9. A blind stitch sewing machine comprising a head, a presser foot mounted in said head, a horizontal cylindrical work support beneath said head, a yielding Work plate section provided with a bender opening mounted in said cylindrical Work support beneath and coperating with said presser foot, a bender and means for reciprocatingit as required through said opening.

1o. A bund stitch sewing machine 00mprising a Worw supporting 'base upon which Y the body of the Work may rest and besupported, an overhanging head, a presser foot mounted in said head, an auxiliary cylindrical Work support projecting horizontally between said base and presser foot to allow tubular work to be slipped thereover and fed therearound, a Ibender projecting through the upper surface of the cylindrical Work support adjacent the presser foot and having an offset shank to prevent interference with the Work, aI reciprocating bender bar and a spring acting to draw the benderv shank against the bender bar.

ll. A blind stitch sewing machine comprising a vertically reciprocating bender bar, a vertically reciprocable bender having an offset shank to allow for the passage of the Work, and a spring acting to draw the bender shank against the bender bar.

In testimonypwhereof, I have signed my name to this specification, in the presence of tivo subscribing Witnesses.

WILLIAM E. BAILEY. `Witnesses:

Bassin G. MORRIS, THOMAS J. DRUMMOND. 

